公开(公告)号：EP3739828A1

公开(公告)日：2020-11-18

申请号：EP19181593.5

申请日：2019-06-21

申请人： Juniper Networks, Inc.

发明人： SINGH, Nischal ,  TORVI, Raveendra

IPC分类号： H04L12/723 ,  H04L12/707

摘要： A node of an LSP may inform the ingress node of the LSP, for example via RSVP signaling, about its temporary unavailability for a certain time. In response, the ingress node can stop using any affected LSP(s) and divert the traffic to other LSPs. This provides a faster mechanism to signal traffic shift then traditional IGP overload which causes considerable churn into the network as all the nodes need to compute the SPF. It is sufficient for ingress node to be aware of this node maintenance and it can use information to divert the traffic to other equal cost multipath (ECMP) LSP(s), or other available LSP(s). If no alternative LSP path exists when the ingress node receives such a message, a new LSP can be built during this time and traffic diverted smoothly (e.g., in a make-before-break manner) before the node goes offline for maintenance. Since only the ingress node is responsible to push the traffic to the LSP, there is no need to tear down the LSP for such node maintenance (especially when they are for a short duration). This can be used with a controller responsible for the LSP as well.

公开(公告)号：EP4277230A1

公开(公告)日：2023-11-15

申请号：EP22181690.3

申请日：2022-06-28

申请人： Juniper Networks, Inc.

发明人： DHANAK, Karan Janakkumar ,  SINGH, Nischal ,  UNNIKRISHNAN, Rahul

IPC分类号： H04L45/28 ,  H04L45/50

摘要： A network device may receive RSVP path request messages from an upstream ingress network device, and may generate an RSVP path error message, with an overload error code and a timeout period, after the network device is online within the configured timeout period. The network device may provide the RSVP path error message to the ingress network devices to cause the ingress network devices to wait for expiration of the timeout period, after the network device is fully online, until resending the RSVP path request messages. The network device may receive new RSVP path request messages from the ingress network devices after expiration of the timeout period after the network device is fully online, and may establish, based on the new RSVP path request messages, label-switched paths from the ingress network devices.

公开(公告)号：EP3301866A1

公开(公告)日：2018-04-04

申请号：EP17193545.5

申请日：2017-09-27

申请人： Juniper Networks, Inc.

发明人： TAMBAKUWALA, Himanshu Kumar ,  SINGH, Nischal ,  CHAWLA, Nipun

IPC分类号： H04L12/707 ,  H04L12/703 ,  H04L12/723

CPC分类号： H04L45/22 ,  H04L41/0654 ,  H04L45/28 ,  H04L45/50

摘要： In one example, a method includes receiving, by a network device, first data defining a group of LSPs, receiving second data defining one or more constraints for one or more bypass LSPs, and receiving third data defining a mapping between the group of LSPs and the one or more bypass LSPs. The method also includes, in response to receiving the third data, automatically signaling, by the network device, a bypass LSP in accordance with the one or more constraints, selecting, by the network device and based on the mapping, a respective alternate next hop for rerouting network traffic received on each LSP of the group of LSPs to the signaled bypass LSP, and programming a forwarding component of the network device to install each of the respective alternate next hops as alternate next hops to primary next hops for the LSPs of the group of LSPs.

摘要翻译： 在一个示例中，一种方法包括：由网络设备接收定义一组LSP的第一数据;接收定义用于一个或多个旁路LSP的一个或多个约束的第二数据;以及接收定义该组LSP之间的映射的第三数据， 该一个或多个旁路LSP。 该方法还包括：响应于接收到第三数据，由网络设备根据所述一个或多个约束自动地发信号通知旁路LSP，由网络设备并且基于该映射来选择相应的备用下一跳 用于将在该组LSP的每个LSP上接收到的网络业务重新路由到信号通知的旁路LSP，并且编程该网络设备的转发组件，以将每个相应的备用下一跳安装为备用下一跳到主用于下一跳的LSP LSP组。

公开(公告)号：EP3151488A1

公开(公告)日：2017-04-05

申请号：EP16190852.0

申请日：2016-09-27

申请人： Juniper Networks, Inc.

发明人： SINGH, Nischal ,  BOOPATHY, Hariharan ,  UNNIKRISHNAN, Rahul

IPC分类号： H04L12/761 ,  H04L12/18

CPC分类号： H04L41/0654 ,  H04L12/18 ,  H04L12/185 ,  H04L45/16

摘要： Techniques are described for enhancements to Protocol Independent Multicast (PIM) to support multicast only fast re-route (MoFRR) over a remote loop free alternate (RLFA) backup path in a network. This disclosure describes a modified PIM control message having a new PIM message type and an additional field to indicate an address of a RLFA network device in the RLFA backup path. According to techniques of this disclosure, network devices along the RLFA backup path are configured to forward the modified PIM control message toward the RLFA network device instead of toward a source of a requested multicast group. When the RLFA network device receives the modified PIM control message, the RLFA network device is configured to forward a conventional PIM control message towards the source of the requested multicast group. In this way, PIM can be used to provide MoFRR over a RLFA backup path.

摘要翻译： 描述了用于增强协议独立组播（PIM）技术的技术，以通过网络中的远程环路自由备用（RLFA）备份路径支持仅组播快速重新路由（MoFRR）。 本公开描述了具有新的PIM消息类型和附加字段的修改的PIM控制消息，以指示RLFA备份路径中的RLFA网络设备的地址。 根据本公开的技术，沿着RLFA备用路径的网络设备被配置为朝向RLFA网络设备转发修改的PIM控制消息，而不是朝向所请求的多播组的源。 当RLFA网络设备接收到修改的PIM控制消息时，RLFA网络设备被配置为将传统PIM控制消息转发到所请求的多播组的源。 以这种方式，PIM可以用于通过RLFA备份路径提供MoFRR。